An article on OWBs in the current issue of Northern Woodlands describes the new regs for Vermont and Maine, effective March 31. As the following passage explains, new boilers will have to meet or exceed these standards in order to be sold after the implementation date. However the article doesn't state whether this new standard apply only to OWBs or all wood-fired boilers and furnaces. Does anybody know? A rule incorporating much of the NESCAUM model goes into effect in Vermont on March 31, 2008. The emission standard will be 0.44 pounds of particulates per million BTUs and will improve to 0.32 pounds in 2010. Maine’s law goes into effect at the same time, but using the EPA’s emission standard of 0.60 pounds rather than 0.44. Maine will, however, also go to 0.32 pounds in the spring of 2010. Both states have setback and stack height provisions.